Super-piezoelectric composite fiber mats for power generation and soft actuators

摘要

A piezoelectric device includes a fiber mat comprising polymer fibers with ferroelectric particles embedded in the polymer fibers. The ferroelectric particles are oriented to generate a net polarization in the fiber mat. The ferroelectric particles may comprise barium titanate particles. The polymer fibers may comprise polylactic acid (PLA) fibers. The piezoelectric device may further include substrates sandwiching the fiber mat, and the fiber mat may be formed by electrospinning polymer fibers containing ferroelectric particles onto one of the substrates. The piezoelectric device may be a piezoelectric actuator configured to receive an input voltage applied across the fiber mat and to output a mechanical displacement in response to the voltage, or the piezoelectric device may be configured to output a voltage in response to a mechanical force applied to the fiber mat.

主权项

1. An apparatus comprising:
a piezoelectric device including:
a fiber mat comprising polymer fibers with ferroelectric particles embedded in the polymer fibers, the polymer material of the polymer fibers electrically insulating the embedded ferroelectric particles; andelectrically conductive substrates sandwiching the fiber mat.